I'm experiencing something similar. This only happens in first gear when I floor it. If I'm on the freeway or in any other gear and smash it, everything is fine. This is how I would describe it, and it goes like this. It feels like when you're about to puke and you try to hold it in, everything comes up but not out and then eventually it does! So far the E70's tranny is the worst I've had in a long time going back to my ML 430. It just plain sucks IMO! (mine does anyway) The 7 speed Transmission in the CEO's R500 is an absolute dream to drive (not talking about the car here) not to mention that it's just as fast with less HP. I have had the car for a year now and nothing has changed, even after multiple visits to the stealer regarding this problem.

I hope you have better luck.

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